フレデリックスバーグ郡区 (アイオワ州チカソー郡) (Japanese Wikipedia)

Analysis of information sources in references of the Wikipedia article "フレデリックスバーグ郡区 (アイオワ州チカソー郡)" in Japanese language version.

refsWebsite

Global rank Japanese rank

1books.google.com

3^rd place

61^st place

books.google.com

Fairbairn, Robert Herd (1919). History of Chickasaw and Howard Counties, Iowa, Volume 1. S. J. Clarke Publishing Company. pp. 265